Prof. Seppo K. Honkanen Profile

Prof. Seppo K. Honkanen

SPIE Involvement:

Conference Program Committee | Track Chair | Author | Editor

Publications (114)

Proceedings Article | 28 April 2017 Presentation

TiO2-coated single and multi-wavelength shifted Bragg grating in SOI platform as add-drop filter (Conference Presentation)

Somnath Paul, Ismo Vartiainen, Matthieu Roussey, Toni Saastamoinen, Jani Tervo, Seppo Honkanen, Markku Kuittinen

Proceedings Volume 10108, 101080U (2017) https://doi.org/10.1117/12.2251807

KEYWORDS: Titanium dioxide, Silicon photonics, Waveguides, Fiber Bragg gratings, Silicon, Optical filters, Atomic layer deposition, Reflection, Coating, Signal attenuation

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Proceedings Article | 19 April 2017 Presentation

Strip-loaded slot waveguide: a step beyond integrated photonics limits (Conference Presentation)

Matthieu Roussey, Leila Ahmadi, Ségolène Pélisset, Markus Häyrinen, Arijit Bera, Ville Kontturi, Janne Laukkanen, Ismo Vartiainen, Seppo Honkanen, Yuri Svirko, Markku Kuittinen

Proceedings Volume 10106, 101061F (2017) https://doi.org/10.1117/12.2251705

KEYWORDS: Thin films, Electromagnetism, Waveguides, Polymers, Integrated photonics, Refractive index, Light wave propagation, Radio propagation, Fabrication, Biosensing

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Proceedings Article | 19 April 2017 Presentation

Slow-light enhanced sensing with an on-chip Fano system (Conference Presentation)

Arijit Bera, Markku Kuittinen, Seppo Honkanen, Matthieu Roussey

Proceedings Volume 10106, 101060V (2017) https://doi.org/10.1117/12.2251961

KEYWORDS: Biosensing, Diagnostics, Waveguides, Biological and chemical sensing, Refractive index, Fiber Bragg gratings, Silicon photonics, Sensors, Slow light, Sensing systems

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Proceedings Article | 27 July 2016 Presentation

Integration of atomic layer deposited nanolaminates on silicon waveguides (Conference Presentation)

Anton Autere, Lasse Karvonen, Antti Säynätjoki, Matthieu Roussey, John Roenn, Elina Färm, Marianna Kemell, Xiaoguang Tu, Tsung-Yang Liow, Patrick Lo, Mikko Ritala, Markku Leskelä, Harri Lipsanen, Seppo Honkanen, Zhipei Sun

Proceedings Volume 9891, 98910J (2016) https://doi.org/10.1117/12.2227097

KEYWORDS: Silicon, Waveguides, Atomic layer deposition, Resonators, Silicon photonics, Integration, Electro optics, Light sources, Electrical engineering, Sun

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Despite all the eminent advantages of silicon photonics, other materials need to be integrated to fulfill the functions that are difficult to realize with silicon alone. This is because silicon has a low light emission efficiency and a low electro-optic coefficient, limiting the use of silicon as a material for light sources and modulators. A strong two-photon absorption (TPA) at high intensities also limits the use of silicon in applications exploiting nonlinear effects. In addition, signal amplification is needed to compensate the insertion and propagation losses in silicon nanowaveguides. To address these issues we have demonstrated the integration of atomic layer deposited nanolaminates on silicon waveguides. Firstly we demonstrate slot waveguide ring resonators patterned on a silicon-on-insulator (SOI) wafer coated with an atomic layer deposited organic/inorganic nanolaminate structure, which consists of alternating layers of tantalum pentoxide (Ta2O5) and polyimide (PI) [1]. These materials were selected since the ALD process for depositing Ta2O5/PI nanolaminate films is already available [2] and both materials exhibit high third order nonlinearities [3-4]. In our nanolaminate ring resonators, the optical power is not only confined in the narrow central air slot but also in several parallel sub-10 nm wide vertical polyimide slots. This indicates that the mode profiles in the silicon slot waveguide can be accurately tuned by the atomic layer deposition (ALD) method. Our results show that ALD of organic and inorganic materials can be combined with conventional silicon waveguide fabrication techniques to create slot waveguide ring resonators with varying mode profiles. Secondly we demonstrate the integration of atomic layer deposited erbium-doped aluminum oxide (Al2O3) nanolaminates on silicon waveguides. This method provides an efficient way for controlling the concentration and distribution of erbium ions. We have applied this method on silicon strip and slot waveguides and show signal enhancement. Our results show that atomic layer deposited nanolaminates can potentially open new possibilities for various photonic applications, such as silicon photonic devices for light emission and amplification, optical sensing and all-optical signal processing. References [1] A. Autere, L. Karvonen, A. Säynätjoki, M. Roussey, E. Färm, M. Kemell, X. Tu, T.Y. Liow, G.Q. Lo, M. Ritala, M. Leskelä, S. Honkanen, H. Lipsanen, and Z. Sun, "Slot waveguide ring resonators coated by an atomic layer deposited organic/inorganic nanolaminate," Opt. Express 23, 26940-26951 (2015) [2] L. D. Salmi, E. Puukilainen, M. Vehkamäki, M. Heikkilä, and M. Ritala, “Atomic layer deposition of Ta2O5/polyimide nanolaminates,” Chem. Vap. Deposition 15, 221–226 (2009). [3] S. Morino, T. Yamashita, K. Horie, T. Wada, and H. Sasabe, “Third-order nonlinear optical properties of aromatic polyisoimides,” React. Funct. Polym. 44, 183–188 (2000). [4] C.-Y. Tai, J. Wilkinson, N. Perney, M. Netti, F. Cattaneo, C. Finlayson, and J. Baumberg, “Determination of nonlinear refractive index in a Ta2O5 rib waveguide using self-phase modulation,” Opt. Express 12, 5110–5116 (2004).

Proceedings Article | 16 March 2016 Paper

Polymer strip-loaded waveguides on ALD-TiO2 films

Leila Ahmadi, Ville Kontturi, Janne Laukkanen, Markku Kuittinen, Jyrki Saarinen, Seppo Honkanen, Matthieu Roussey

Proceedings Volume 9759, 97590D (2016) https://doi.org/10.1117/12.2212324

KEYWORDS: Titanium dioxide, Polymers, Waveguides, Polymer multimode waveguides, Atomic layer deposition, Fabrication, Nickel, Refractive index, Polarization, Resonators

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Proceedings Article | 15 March 2016 Paper

Strip loaded waveguide on lithium niobate thin films

Matthieu Roussey, Petri Karvinen, Markus Häyrinen, Seppo Honkanen, Markku Kuittinen

Proceedings Volume 9750, 975006 (2016) https://doi.org/10.1117/12.2212286

KEYWORDS: Titanium dioxide, Waveguides, Lithium niobate, Thin films, Nanolithography, Refractive index, Etching, Optical lithography, Atomic layer deposition, Optical fibers, Semiconducting wafers, Chromium, Photomasks

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Proceedings Article | 15 March 2016 Paper

Dynamic control of a Fano resonance with a fully integrated silicon nanostructure

Arijit Bera, Matthieu Roussey, Markku Kuittinen, Seppo Honkanen

Proceedings Volume 9744, 974410 (2016) https://doi.org/10.1117/12.2212418

KEYWORDS: Electro optics, Silicon, Waveguides, Silicon photonics, Electro optic polymers, Electrooptic modulators, Modulators, Nanostructures, Photonic crystals, Refractive index, Finite-difference time-domain method, Electrodes

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Proceedings Article | 7 March 2016 Paper

Temperature-induced changes in optical properties of thin film TiO2-Al2O3 bi-layer structures grown by atomic layer deposition

Rizwan Ali, Muhammad Rizwan Saleem, Seppo Honkanen

Proceedings Volume 9749, 97490O (2016) https://doi.org/10.1117/12.2212249

KEYWORDS: Atomic layer deposition, Thin films, Optical properties, Thermal optics, Temperature metrology, Multilayers, Oxides, Titanium, Spectroscopic ellipsometry, Environmental sensing, Titanium dioxide, Refractive index, Data modeling, Aluminum, Molecules

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Proceedings Article | 1 June 2015 Paper

ALD-tuned titanium dioxide nanophotonics

Markus Häyrinen, Arijit Bera, Matthieu Roussey, Markku Kuittinen, Seppo Honkanen

Proceedings Volume 9519, 951903 (2015) https://doi.org/10.1117/12.2178132

KEYWORDS: Waveguides, Atomic layer deposition, Nanolithography, Resonators, Nanophotonics, Silicon, Wave propagation, Etching, Photonics, Titanium dioxide

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Proceedings Article | 13 March 2015 Paper

Design and fabrication of sub-wavelength athermal resonant waveguide replicated gratings on different polymer substrates

Muhammad Rizwan Saleem, Rizwan Ali, Seppo Honkanen, Jari Turunen

Proceedings Volume 9374, 93740W (2015) https://doi.org/10.1117/12.2076873

KEYWORDS: Polymers, Waveguides, Temperature metrology, Optical design, Atomic layer deposition, Optical filters, Polymer multimode waveguides, Refractive index, Polymer thin films, Titanium dioxide

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Proceedings Article | 27 February 2015 Paper

High-quality slot waveguide ring resonator based on atomic layer deposition

A. Autere, L. Karvonen, A. Säynätjoki, M. Roussey, E. Färm, M. Kemell, X. Tu, T. Y. Liow, G. Lo, M. Ritala, M. Leskelä, S. Honkanen, Z. Sun

Proceedings Volume 9367, 93671J (2015) https://doi.org/10.1117/12.2076903

KEYWORDS: Waveguides, Resonators, Atomic layer deposition, Silicon, Scanning electron microscopy, Polarization, Photonics, All optical signal processing, Silicon photonics, Photonic devices

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Proceedings Article | 27 February 2015 Paper

Slot waveguide ring resonators for visible wavelengths in ALD titanium dioxide

Markus Häyrinen, Matthieu Roussey, Antti Säynätjoki, Markku Kuittinen, Seppo Honkanen

Proceedings Volume 9365, 936513 (2015) https://doi.org/10.1117/12.2077413

KEYWORDS: Waveguides, Atomic layer deposition, Resonators, Visible radiation, Silicon, Near infrared, Electron beam lithography, Reactive ion etching, Etching, Titanium dioxide

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Proceedings Article | 27 February 2015 Paper

Cross-slot waveguide Bragg grating

Matthieu Roussey, Petri Stenberg, Arijit Bera, Somnath Paul, Jani Tervo, Markku Kuittinen, Seppo Honkanen

Proceedings Volume 9371, 93711T (2015) https://doi.org/10.1117/12.2077418

KEYWORDS: Waveguides, Polarization, Fiber Bragg gratings, Silicon, Refractive index, Photonics, Photonic crystals, Finite-difference time-domain method, Silica, Nanowires

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Proceedings Article | 2 May 2014 Paper

Determination of thermo-optic properties of atomic layer deposited thin TiO2 films for athermal resonant waveguide gratings by spectroscopic ellipsometry

Muhammad Rizwan Saleem, Rizwan Ali, Seppo Honkanen, Jari Turunen

Proceedings Volume 9130, 91300A (2014) https://doi.org/10.1117/12.2052299

KEYWORDS: Thin films, Refractive index, Molecules, Atomic layer deposition, Thermal optics, Waveguides, Temperature metrology, Water, Spectroscopic ellipsometry, Titanium dioxide

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Proceedings Article | 1 May 2014 Paper

Analysis of a polarization-independent nonlinear cross-slot waveguide with Fourier Modal Method (FMM)

Somnath Paul, Jani Tervo, Seppo Honakanen

Proceedings Volume 9133, 913313 (2014) https://doi.org/10.1117/12.2048994

KEYWORDS: Waveguides, Refractive index, Silicon, Amorphous silicon, Kerr effect, Nonlinear optics, Telecommunications, Polarization, Silicon photonics, Titanium dioxide

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Proceedings Article | 8 March 2014 Paper

Application of atomic layer deposition in nanophotonics

Lasse Karvonen, Antti Säynätjoki, Matthieu Roussey, Markku Kuittinen, Seppo Honkanen

Proceedings Volume 8988, 89880Z (2014) https://doi.org/10.1117/12.2042263

KEYWORDS: Waveguides, Silicon, Atomic layer deposition, Coating, Silicon films, Wave propagation, Scanning electron microscopy, Nanophotonics, Photonic crystals, Titanium dioxide

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Proceedings Article | 7 March 2014 Paper

Low-loss titanium-dioxide strip waveguides by atomic layer deposition

M. Roussey, M. Häyrinen, A. Säynätjoki, V. Gandhi, L. Karvonen, P. Stenberg, M. Kuittinen, S. Honkanen

Proceedings Volume 8982, 89820E (2014) https://doi.org/10.1117/12.2038912

KEYWORDS: Waveguides, Atomic layer deposition, Wave propagation, Polarization, Scanning electron microscopy, Light wave propagation, Silicon, Etching, Chromium, Titanium dioxide

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Proceedings Article | 7 March 2014 Paper

Mode-splitting of a non-polarizing guided mode resonance filter by substrate overetching effect

Muhammad Rizwan Saleem, Seppo Honkanen, Jari Turunen

Proceedings Volume 8974, 897417 (2014) https://doi.org/10.1117/12.2038116

KEYWORDS: Silica, Diffraction gratings, Atomic layer deposition, Waveguides, Etching, Reactive ion etching, Electron beam lithography, Optical filtering, Reflectivity, Titanium dioxide

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Proceedings Article | 7 March 2014 Paper

Nanolaminate structures fabricated by ALD for reducing propagation losses and enhancing the third-order optical nonlinearities

Lasse Karvonen, Tapani Alasaarela, Henri Jussila, Soroush Mehravar, Ya Chen, Antti Säynätjoki, Robert Norwood, Nasser Peyghambarian, Khanh Kieu, Seppo Honkanen, Harri Lipsanen

Proceedings Volume 8982, 89820O (2014) https://doi.org/10.1117/12.2045006

KEYWORDS: Zinc oxide, Crystals, Atomic layer deposition, Nonlinear optics, Corundum, Nanolithography, Refractive index, Waveguides, Aluminum, Titanium dioxide

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Proceedings Article | 19 February 2014 Paper

Merged photonic crystal slot waveguide: confining slow modes in tiny volumes

M. Roussey, A. Bera, P. Stenberg, S. Honkanen, M. Kuittinen

Proceedings Volume 8994, 89940C (2014) https://doi.org/10.1117/12.2036258

KEYWORDS: Waveguides, Photonic crystals, Silicon, Atomic layer deposition, Four wave mixing, Finite-difference time-domain method, Coating, Waveguide modes, Electron beam lithography, Titanium dioxide

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Proceedings Article | 14 March 2013 Paper

A highly accurate engineering of silicon integrated microring resonators based on the nanofabrication technique

M. Erdmanis, L. Karvonen, A. Säynätjoki, S. Honkanen, I. Tittonen

Proceedings Volume 8629, 86291J (2013) https://doi.org/10.1117/12.2007266

KEYWORDS: Resonators, Atomic layer deposition, Waveguides, Silicon, Dispersion, Microrings, Wave propagation, Silica, Nanofabrication, Titanium dioxide

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Proceedings Article | 5 March 2013 Paper

Nonpolarizing single layer inorganic and double layer organic-inorganic one-dimensional guided mode resonance filters

Muhammad Rizwan Saleem, Seppo Honkanen, Jari Turunen

Proceedings Volume 8613, 86130C (2013) https://doi.org/10.1117/12.2001692

KEYWORDS: Diffraction gratings, Polarization, Dielectric polarization, Atomic layer deposition, Optical design, Etching, Waveguides, Chromium, Plasma, Titanium dioxide

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Proceedings Article | 16 May 2012 Paper

Third-order optical nonlinearities of Ag nanoparticles fabricated by two-step ion exchange in glass

J. Rönn, L. Karvonen, S. Kujala, A. Säynätjoki, A. Tervonen, S. Honkanen

Proceedings Volume 8434, 84341K (2012) https://doi.org/10.1117/12.922224

KEYWORDS: Nanoparticles, Silver, Absorption, Glasses, Ion exchange, Nonlinear optics, Refractive index, Annealing, Nanolithography, Transmittance

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Proceedings Article | 16 May 2012 Paper

Low-nonlinearity and low-loss silicon slot waveguides with ALD-grown thin films

L. Karvonen, A. Säynätjoki, X. Tu, T. Y. Liow, M. Hiltunen, J. Hiltunen, A. Tervonen, G. Q. Lo, S. Honkanen

Proceedings Volume 8431, 84311M (2012) https://doi.org/10.1117/12.921805

KEYWORDS: Waveguides, Silicon, Atomic layer deposition, Wave propagation, Refractive index, Lithography, Silicon films, Thin films, Deep ultraviolet, Titanium dioxide

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Proceedings Article | 9 May 2012 Paper

Partially athermalized waveguide gratings

Muhammad Rizwan Saleem, Seppo Honkanen, Jari Turunen

Proceedings Volume 8428, 842817 (2012) https://doi.org/10.1117/12.922070

KEYWORDS: Temperature metrology, Polymers, Atomic layer deposition, Refractive index, Diffraction gratings, Waveguides, Binary data, Thermal optics, Reflectivity, Titanium dioxide

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SPIE Journal Paper | 2 March 2012

Hydrogen silsesquioxane resist stamp for replication of nanophotonic components in polymers

Muhammad Rizwan Saleem, Petri Stenberg, Seppo Honkanen, Jari Turunen, Muhammad Bilal Khan, Zaffar Muhammad Khan

JM3, Vol. 11, Issue 1, 013007, (March 2012) https://doi.org/10.1117/12.10.1117/1.JMM.11.1.013007

KEYWORDS: Etching, Silicon, Hydrogen, Reflectivity, Polymers, Nanophotonics, Photoresist processing, Electron beams, Heat treatments, Reactive ion etching

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Proceedings Article | 16 February 2012 Paper

Atomic layer deposition for fabrication of ytterbium doped fibers

Joan Montiel i Ponsoda, Lars Norin, Markus Bosund, Changgeng Ye, Mikko Söderlund, Ari Tervonen, Seppo Honkanen

Proceedings Volume 8237, 82372B (2012) https://doi.org/10.1117/12.908725

KEYWORDS: Atomic layer deposition, Optical fibers, Doping, Ytterbium, Silica, Refractive index, Aluminum, Cladding, Glasses, Chemical vapor deposition

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Proceedings Article | 16 February 2012 Paper

Confined-doped ytterbium fibers for beam quality improvement: fabrication and performance

Changgeng Ye, Joona Koponen, Teemu Kokki, Joan Montiel i Ponsoda, Ari Tervonen, Seppo Honkanen

Proceedings Volume 8237, 823737 (2012) https://doi.org/10.1117/12.906371

KEYWORDS: Ytterbium, Optical fibers, Doping, Fiber lasers, Superluminescent sources, Deposition processes, Ions, Nanoparticles, Cladding, Refractive index

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Proceedings Article | 8 February 2012 Paper

HSQ resist for replication stamp in polymers

M. R. Saleem, P. Stenberg, M. B. Khan, Z. M. Khan, S. Honkanen, J. Turunen

Proceedings Volume 8249, 82490G (2012) https://doi.org/10.1117/12.907862

KEYWORDS: Etching, Silicon, Polymers, Heat treatments, Reflectivity, Hydrogen, Electron beams, Lithography, Reactive ion etching, Semiconducting wafers

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Proceedings Article | 6 February 2012 Paper

SERS enhancement of Ag nanoparticle patterns embedded in glass by two-step ion exchange

Lasse Karvonen, Ya Chen, Antti Säynätjoki, Ari Tervonen, Seppo Honkanen

Proceedings Volume 8234, 823404 (2012) https://doi.org/10.1117/12.908338

KEYWORDS: Silver, Glasses, Ion exchange, Ions, Particles, Neptunium, Nanoparticles, Iron, Aluminum, Absorption

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Proceedings Article | 2 February 2012 Paper

Compact and efficient couplers for silicon slot waveguides

A. Säynätjoki, L. Karvonen, X. Tu, T. Y. Liow, A. Tervonen, G. Q. Lo, S. Honkanen

Proceedings Volume 8266, 82660J (2012) https://doi.org/10.1117/12.908742

KEYWORDS: Waveguides, Silicon, Resonators, Beam propagation method, Lithography, Atomic layer deposition, Wave propagation, Deep ultraviolet, Brain-machine interfaces, Titanium dioxide

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Proceedings Article | 2 February 2012 Paper

Loss reduction of silicon slot waveguides with ALD grown thin films

A. Säynätjoki, L. Karvonen, T. Alasaarela, D. Korn, L. Alloatti, A. Tervonen, R. Palmer, C. Koos, J. Leuthold, W. Freude, S. Honkanen

Proceedings Volume 8266, 82660D (2012) https://doi.org/10.1117/12.908640

KEYWORDS: Waveguides, Atomic layer deposition, Silicon, Silicon films, Thin films, Wave propagation, Thin film growth, Lithography, Silicon photonics, Titanium dioxide

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SPIE Journal Paper | 1 November 2011

Analysis of temperature dependence of photodarkening in ytterbium-doped fibers

Joan Montiel i Ponsoda, Changgeng Ye, Jeffrey Koplow, Mikko Söderlund, Joona Koponen, Seppo Honkanen

OE, Vol. 50, Issue 11, 111610, (November 2011) https://doi.org/10.1117/12.10.1117/1.3640856

KEYWORDS: Optical fibers, Temperature metrology, Ions, Absorption, Cladding, Color centers, Glasses, Optical engineering, Ytterbium, Cameras

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SPIE Journal Paper | 1 July 2011

Ion-exchanged glass waveguide technology: a review

Ari Tervonen, Seppo Honkanen, Brian West

OE, Vol. 50, Issue 07, 071107, (July 2011) https://doi.org/10.1117/12.10.1117/1.3559213

KEYWORDS: Waveguides, Glasses, Ion exchange, Ions, Silver, Refractive index, Diffusion, Potassium, Planar waveguides, Waveguide lasers

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Proceedings Article | 1 June 2011 Paper

Thermal behavior of waveguide gratings

M. Saleem, M. Khan, Z. Khan, P. Stenberg, T. Alasaarela, S. Honkanen, B. Bai, J. Turunen, P. Vahimaa

Proceedings Volume 8069, 80690A (2011) https://doi.org/10.1117/12.885708

KEYWORDS: Reflectivity, Waveguides, Polymers, Atomic layer deposition, Optical design, Thermal optics, Refractive index, Diffraction gratings, Temperature metrology, Titanium dioxide

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Proceedings Article | 23 February 2011 Paper

Si-based 1D and 2D slot waveguides for magneto-optics

Amit Khanna, Antti Säynätjoki, Ari Tervonen, Seppo Honkanen

Proceedings Volume 7934, 79340B (2011) https://doi.org/10.1117/12.874549

KEYWORDS: Waveguides, Molybdenum, Magneto-optics, Polymers, Silicon, Wave propagation, Birefringence, Polymer multimode waveguides, Garnet, Refractive index

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Proceedings Article | 11 February 2011 Paper

Characterization of modal coupling of Bragg gratings in large-mode-area fibers

Aarni Iho, Ari Tervonen, Kalle Ylä-Jarkko, Simo Tammela, Seppo Honkanen

Proceedings Volume 7914, 79141Z (2011) https://doi.org/10.1117/12.872361

KEYWORDS: Fiber Bragg gratings, Cladding, Optical fibers, Signal detection, Wave propagation, Fiber optics, Fiber lasers, Optical filters, Light wave propagation, Phase matching

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Proceedings Article | 11 February 2011 Paper

Measurement of photodarkening-induced refractive index change in ytterbium doped fibers by modal interference

Changgeng Ye, Joan Montiel i Ponsoda, Ari Tervonen, Seppo Honkanen

Proceedings Volume 7914, 79142A (2011) https://doi.org/10.1117/12.874312

KEYWORDS: Optical fibers, Refractive index, Ytterbium, Phase shifts, Interferometers, Absorption, Cladding, Light sources, Fiber lasers, Fiber Bragg gratings

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Proceedings Article | 25 January 2011 Paper

New concept for a regenerative amplifier for passive optical networks

A. Tervonen, M. Mattila, W. Weiershausen, T. von Lerber, E. Parsons, H. Chaouch, F. Kueppers, S. Honkanen

Proceedings Volume 7959, 79590A (2011) https://doi.org/10.1117/12.876184

KEYWORDS: Optical amplifiers, Photodiodes, Photonics, Receivers, Signal attenuation, Amplitude shift keying, Amplifiers, Passive optical networks, Semiconductor optical amplifiers, Tolerancing

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Proceedings Article | 26 February 2010 Paper

Optical properties of atomic layer deposited materials and their application in silicon waveguides

Tapani Alasaarela, Jussi Hiltunen, Amit Khanna, Antti Säynätjoki, Ari Tervonen, Seppo Honkanen

Proceedings Volume 7598, 75980D (2010) https://doi.org/10.1117/12.841524

KEYWORDS: Zinc oxide, Waveguides, Atomic layer deposition, Silicon, Refractive index, Prisms, Wave propagation, Optical properties, Crystals, Titanium dioxide

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Proceedings Article | 26 February 2010 Paper

Silicon based 2-dimensional slot waveguides

A. Khanna, T. Alasaarela, A. Säynätjoki, A. Tervonen, S. Honkanen

Proceedings Volume 7598, 75980E (2010) https://doi.org/10.1117/12.841707

KEYWORDS: Waveguides, Silicon, Polarization, Silica, Lithography, Plasma enhanced chemical vapor deposition, Birefringence, Deep ultraviolet, Atomic layer deposition, Signal processing

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Proceedings Article | 17 February 2010 Paper

Photodarkening-induced increase of temperature in ytterbium-doped fibers

J. Montiel i Ponsoda, M. Söderlund, J. Koplow, J. Koponen, S. Honkanen

Proceedings Volume 7580, 75802N (2010) https://doi.org/10.1117/12.842584

KEYWORDS: Temperature metrology, Optical fibers, Ions, Absorption, Thermal modeling, Cameras, Cooling systems, Cladding, Color centers, Thermography

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Proceedings Article | 17 February 2010 Paper

Thermal bleaching of photodarkening in ytterbium-doped fibers

Mikko Söderlund, Joan Montiel i Ponsoda, Jeffrey Koplow, Seppo Honkanen

Proceedings Volume 7580, 75800B (2010) https://doi.org/10.1117/12.842095

KEYWORDS: Temperature metrology, Absorption, Optical fibers, Color centers, Fiber lasers, Thermodynamics, Signal detection, Error analysis, Fiber Bragg gratings, Ytterbium

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Proceedings Article | 17 February 2010 Paper

Mode properties of ALD filled slot waveguides

A. Säynätjoki, T. Alasaarela, A. Khanna, A. Tervonen, S. Honkanen

Proceedings Volume 7606, 76061G (2010) https://doi.org/10.1117/12.842262

KEYWORDS: Waveguides, Atomic layer deposition, Silicon, Cladding, Refractive index, Oxides, Interfaces, Silica, Etching, Titanium dioxide

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SPIE Journal Paper | 1 August 2009 Open Access

Feature size reduction of silicon slot waveguides by partial filling using atomic layer deposition

Tapani Alasaarela, Antti Säynätjoki, Teppo Hakkarainen, Seppo Honkanen

OE, Vol. 48, Issue 08, 080502, (August 2009) https://doi.org/10.1117/12.10.1117/1.3206731

KEYWORDS: Waveguides, Atomic layer deposition, Silicon, Silicon films, Thin films, Refractive index, Prisms, Light wave propagation, Thin film growth, Glasses

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Proceedings Article | 19 February 2009 Paper

Combined photodarkening and thermal bleaching measurement of an ytterbium-doped fiber

Joan Montiel i Ponsoda, Mikko Söderlund, Jeffrey Koplow, Joona Koponen, Aarni Iho, Seppo Honkanen

Proceedings Volume 7195, 71952D (2009) https://doi.org/10.1117/12.809182

KEYWORDS: Absorption, Annealing, Cladding, Glasses, Color centers, Signal detection, Sensors, Ultraviolet radiation, Modulation, Signal attenuation

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Proceedings Article | 7 February 2009 Paper

Modeling inversion in an ytterbium-doped fiber

A. Iho, M. Söderlund, J. Montiel i Ponsoda, J. Koponen, S. Honkanen

Proceedings Volume 7212, 721209 (2009) https://doi.org/10.1117/12.807820

KEYWORDS: Absorption, Cladding, Ions, Single mode fibers, Luminescence, Ytterbium, Optical simulations, Fiber amplifiers, Computer simulations, Fiber couplers

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Proceedings Article | 7 February 2009 Paper

Silicon slot waveguides for nonlinear optics

A. Säynätjoki, L. Karvonen, A. Khanna, T. Alasaarela, A. Tervonen, S. Honkanen

Proceedings Volume 7212, 72120T (2009) https://doi.org/10.1117/12.812974

KEYWORDS: Waveguides, Silicon, Nonlinear optics, Refractive index, Atomic layer deposition, Manufacturing, Silica, Resonators, Lithography, Etching

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Proceedings Article | 12 May 2008 Paper

Mode-locked fiber/waveguide lasers based on a fiber taper embedded in carbon nanotubes/polymer composite

Qing Wang, Kieu Khanh, Seppo Honkanen, Franko Kueppers

Proceedings Volume 6996, 69961A (2008) https://doi.org/10.1117/12.780759

KEYWORDS: Mode locking, Fiber lasers, Absorption, Waveguides, Composites, Glasses, Waveguide lasers, Mirrors, Single walled carbon nanotubes, Semiconductor lasers

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Proceedings Article | 1 May 2008 Paper

Amorphous silicon optical waveguides and Bragg mirrors

A. Khanna, M. Mulot, S. Arpiainen, A. Säynätjoki, J. Ahopelto, S. Honkanen, H. Lipsanen

Proceedings Volume 6996, 699605 (2008) https://doi.org/10.1117/12.781237

KEYWORDS: Waveguides, Mirrors, Plasma enhanced chemical vapor deposition, Reflectivity, Silicon, Amorphous silicon, Reactive ion etching, Refractive index, Reflectometry, Signal processing

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Proceedings Article | 26 April 2008 Paper

Fiber ringdown-beat pressure sensors

Haiyan Chen, Qing Wang, Tuomo von Lerber, Seppo Honkanen, Franko Kueppers

Proceedings Volume 7003, 70031J (2008) https://doi.org/10.1117/12.771132

KEYWORDS: Fiber optics sensors, Sensors, Single mode fibers, Polarizers, Birefringence, Optical amplifiers, Modulation, Modulators, Fabry–Perot interferometers, Light sources

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Proceedings Article | 22 February 2008 Paper

Comparison of photodarkening in Ytterbium-doped fibers

Mikko Söderlund, Joan Montiel, Simo Tammela, Sanna Yliniemi, Seppo Honkanen

Proceedings Volume 6873, 687325 (2008) https://doi.org/10.1117/12.775012

KEYWORDS: Optical fibers, Absorption, Cladding, Ytterbium, Optical filters, CCD cameras, Fiber lasers, Lamps, Spectrum analysis, Reflectivity

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Proceedings Article | 10 September 2007 Paper

The influence of bit pattern effects on clock recovery in phase shift keyed fiber-optic transmission systems

Earl Parsons, Qing Wang, Seppo Honkanen, Tuomo von Lerber, Franko Kueppers

Proceedings Volume 6774, 67740K (2007) https://doi.org/10.1117/12.732471

KEYWORDS: Clocks, Phase shift keying, Osmium, Phase shifts, Optical filters, Modulation, Binary data, Reflectivity, Fiber optics, Polarizers

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Proceedings Article | 10 September 2007 Paper

Roadmap for low-cost optical regeneration

Tuomo von Lerber, Seppo Honkanen, Franko Kueppers

Proceedings Volume 6774, 67740J (2007) https://doi.org/10.1117/12.752559

KEYWORDS: Clocks, Chromium, Polarization, Resonators, Signal processing, Integrated optics, Mode locking, Modulation, Semiconductor lasers, Optics manufacturing

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Proceedings Article | 20 February 2007 Paper

A study of silver-film ion-exchanged glass waveguides in phosphate glass

Sanna Yliniemi, Jacques Albert, Seppo Honkanen

Proceedings Volume 6469, 64690Y (2007) https://doi.org/10.1117/12.723993

KEYWORDS: Silver, Ions, Waveguides, Refractive index, Glasses, Sodium, Ion exchange, Diffusion, Cesium, Nickel

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Proceedings Article | 8 September 2006 Paper

High-efficiency switchable diffractive lens

Guoqiang Li, P. Valley, P. Ayräs, J. Haddock, M. Giridhar, D. Mathine, J. Schwiegerling, G. Meredith, Bernard Kippelen, Seppo Honkanen, N. Peyghambarian

Proceedings Volume 6310, 63100H (2006) https://doi.org/10.1117/12.681368

KEYWORDS: Electrodes, Diffraction, Liquid crystals, Eye, Eyeglasses, Electro optics, Electro optical modeling, Eye models, Switching, Glasses

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Proceedings Article | 20 April 2006 Paper

Active micro and nano-structured glass fiber and waveguide devices

A. Schülzgen, J. Auxier, S. Honkanen, L. Li, V. Temyanko, S.-H. Chen, S. Suzuki, M. Morrell, S. Sabet, S. Sen, N. Borrelli, N. Peyghambarian

Proceedings Volume 6183, 618306 (2006) https://doi.org/10.1117/12.664169

KEYWORDS: Waveguides, Glasses, Fiber lasers, Lead, Ion exchange, Output couplers, Quantum dots, Absorption, Luminescence, Active optics

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Proceedings Article | 20 April 2006 Paper

Silver film ion-exchanged Er-doped waveguide lasers and photowritten waveguide gratings in phosphate glass

Sanna Yliniemi, Jacques Albert, Albane Laronche, Qing Wang, Seppo Honkanen

Proceedings Volume 6183, 61830M (2006) https://doi.org/10.1117/12.665028

KEYWORDS: Glasses, Waveguides, Waveguide lasers, Ion exchange, Silver, Ions, Ytterbium, Erbium, Laser damage threshold, Channel waveguides

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Proceedings Article | 24 February 2006 Paper

Compact coding devices using the novel anti-symmetric gratings

Jose Castro, Seppo Honkanen, Christoph Greiner, Dmitri Iazikov, Thomas Mossberg, David Geraghty

Proceedings Volume 6123, 61230R (2006) https://doi.org/10.1117/12.646603

KEYWORDS: Computer programming, Waveguides, Fiber Bragg gratings, Wave propagation, Telecommunications, Computer security, Network security, Integrated optics, Cryptography, Optical communications

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Proceedings Article | 10 November 2005 Paper

Hybrid glass and sol-gel integrated optical waveguides for absorption-based biosensing

Ismail Araci, Nasuhi Yurt, Seppo Honkanen, Sergio Mendez, Nasser Peyghambarian

Proceedings Volume 6004, 60040J (2005) https://doi.org/10.1117/12.628880

KEYWORDS: Waveguides, Sol-gels, Glasses, Biosensing, Ultraviolet radiation, Integrated optics, Proteins, Absorption, Signal detection, Photomasks

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SPIE Journal Paper | 1 September 2005

Determination of ion exchange parameters by a genetic algorithm

Brian West, Seppo Honkanen

OE, Vol. 44, Issue 09, 094602, (September 2005) https://doi.org/10.1117/12.10.1117/1.2048752

KEYWORDS: Ion exchange, Genetic algorithms, Ions, Silver, Process modeling, Waveguides, Refractive index, Glasses, Optical engineering, Diffusion

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Proceedings Article | 22 April 2005 Paper

Quantum dots for fiber laser sources

Jason Auxier, Axel Schuelzgen, Michael Morrell, Brian West, Seppo Honkanen, Sabyasachi Sen, Nicholas Borrelli, Nasser Peyghambarian

Proceedings Volume 5709, (2005) https://doi.org/10.1117/12.594407

KEYWORDS: Quantum dots, Glasses, Waveguides, Lead, Mode locking, Absorption, Ion exchange, Fiber lasers, Picosecond phenomena, Process modeling

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Proceedings Article | 18 August 2004 Paper

Buried ion-exchanged glass waveguides featuring low birefringence with a broad range of waveguide widths

Sanna Yliniemi, Brian West, Timo Aalto, Pratheepan Madasamy, Nasser Peyghambarian, Seppo Honkanen

Proceedings Volume 5451, (2004) https://doi.org/10.1117/12.548227

KEYWORDS: Waveguides, Birefringence, Silver, Glasses, Annealing, Ion exchange, Polarization, Ions, Integrated photonics, Sodium

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Proceedings Article | 18 August 2004 Paper

The dependence of performance on grating tilt in an ion-exchanged waveguide add/drop multiplexer

Jose Castro, David Geraghty, Brian West, Seppo Honkanen

Proceedings Volume 5451, (2004) https://doi.org/10.1117/12.549913

KEYWORDS: Waveguides, Ion exchange, Multiplexers, Fiber Bragg gratings, Glasses, Solids, Fabrication, Waveguide modes, Diffusion, Process modeling

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Proceedings Article | 18 August 2004 Paper

Advanced modeling and design of ion-exchanged glass waveguides and devices

Brian West, Seppo Honkanen

Proceedings Volume 5451, (2004) https://doi.org/10.1117/12.548225

KEYWORDS: Waveguides, Silver, Ion exchange, Ions, Glasses, Sodium, Fused deposition modeling, Directional couplers, Instrument modeling, Wave propagation

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SPIE Journal Paper | 1 May 2002

Waveguide distributed Bragg reflector laser arrays in erbium doped glass made by dry Ag film ion exchange

Pratheepan Madasamy, Gualtiero Nunzi Conti, Pekka Poyhonen, Yongdan Hu, Michael Morrell, David Geraghty, Seppo Honkanen, Nasser Peyghambarian

OE, Vol. 41, Issue 05, (May 2002) https://doi.org/10.1117/12.10.1117/1.1466852

KEYWORDS: Waveguides, Ion exchange, Silver, Glasses, Annealing, Waveguide lasers, Distributed Bragg reflectors, Erbium, Fabrication, Optical amplifiers

Proceedings Article | 15 May 2001 Paper

Ion-exchanged waveguide add/drop filter

David Geraghty, Dan Provenzano, Michael Morrell, Seppo Honkanen, Amnon Yariv, Nasser Peyghambarian

Proceedings Volume 4277, (2001) https://doi.org/10.1117/12.426828

KEYWORDS: Waveguides, Polarization, Fiber Bragg gratings, Optical filters, Silver, Single mode fibers, Wave propagation, Waveguide modes, Absorption, Integrated optics

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Proceedings Article | 24 March 2000 Paper

MMI splitters by ion-exchange in glass

Saurav Das, David Geraghty, Seppo Honkanen, Nasser Peyghambarian

Proceedings Volume 3936, (2000) https://doi.org/10.1117/12.379954

KEYWORDS: Waveguides, Brain-machine interfaces, Glasses, Ion exchange, Ions, Multimode interference devices, Silver, Refractive index, Wave propagation, Integrated optics

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SPIE Journal Paper | 1 February 2000

Self-aligned photoresist patterning for integrated optics

David Geraghty, Pekka Ayras, Ghassan Jabbour, Seppo Honkanen, Nasser Peyghambarian

OE, Vol. 39, Issue 02, (February 2000) https://doi.org/10.1117/12.10.1117/1.602436

KEYWORDS: Interferometers, Photoresist materials, Heterodyning, Waveguides, Birefringence, Dichroic materials, Optical lithography, Interferometry, Beam splitters, Laser sources

Proceedings Article | 1 April 1999 Paper

Potential and challenges of sol-gel materials for erbium-doped amplifiers

Juha Rantala, Seppo Honkanen, Nasser Peyghambarian

Proceedings Volume 3622, (1999) https://doi.org/10.1117/12.344509

KEYWORDS: Glasses, Sol-gels, Erbium, Waveguides, Optical amplifiers, Oxides, Ions, Silicon, Aluminum, Silica

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Proceedings Article | 1 April 1999 Paper

Strip-loaded structure for ion-exchanged Er3+-doped glass waveguide amplifiers

Gualtiero Nunzi Conti, Pekka Ayras, C. Cavaliere, Bor-Chyuan Hwang, Tao Luo, Juha Rantala, Shibin Jiang, Seppo Honkanen, Nasser Peyghambarian

Proceedings Volume 3622, (1999) https://doi.org/10.1117/12.344501

KEYWORDS: Waveguides, Glasses, Sol-gels, Amplifiers, Diffusion, Absorption, Signal attenuation, Optical amplifiers, Erbium, Optical lithography

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Proceedings Article | 26 March 1999 Paper

Birefringence control for ion-exchanged channel waveguides at 1.55-um wavelength

Pekka Ayras, Gualtiero Nunzi Conti, Seppo Honkanen, Nasser Peyghambarian

Proceedings Volume 3620, (1999) https://doi.org/10.1117/12.343734

KEYWORDS: Waveguides, Birefringence, Silver, Potassium, Channel waveguides, Glasses, Ions, Refractive index, Polarization, Dense wavelength division multiplexing

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Proceedings Article | 26 March 1999 Paper

Fabrication of hybrid sol-gel glass diffractive elements

Juha Rantala, Pekka Ayras, Raviv Levy, Michael Descour, Seppo Honkanen, Nasser Peyghambarian

Proceedings Volume 3620, (1999) https://doi.org/10.1117/12.343732

KEYWORDS: Sol-gels, Diffraction, Glasses, Modulation, Lenses, Surface roughness, Silicon, Ultraviolet radiation, Binary data, Thin films

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Proceedings Article | 26 February 1999 Paper

Thin film waveguide sensors for chemical detection

Pekka Ayras, David Geraghty, Seppo Honkanen, Karen Grace, Basil Swanson, Karl Shrouf, Xiaoguang Yang, Pekka Katila, Matti Leppihalme, Ari Tervonen, Nasser Peyghambarian

Proceedings Volume 3537, (1999) https://doi.org/10.1117/12.341045

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SPIE Journal Paper | 1 December 1998

New Er3+-doped phosphate glass for ion-exchanged waveguide amplifiers

Shibin Jiang, Tao Luo, Bor-Chyuan Hwang, Gualtiero Nunzi Conti, Michael Myers, Daniel Rhonehouse, Seppo Honkanen, Nasser Peyghambarian

OE, Vol. 37, Issue 12, (December 1998) https://doi.org/10.1117/12.10.1117/1.602013

KEYWORDS: Glasses, Erbium, Sodium, Waveguides, Optical amplifiers, Absorption, Fiber amplifiers, Ions, Planar waveguides, Luminescence

Proceedings Article | 6 August 1998 Paper

Real-time chemical detection using species-selective thin films and waveguide Zeeman interferometry

Karen Grace, Karl Shrouf, Seppo Honkanen, Pekka Ayras, Pekka Katila, Matti Leppihalme, Roger Johnston, Xiaoguang Yang, Basil Swanson, Nasser Peyghambarian

Proceedings Volume 3383, (1998) https://doi.org/10.1117/12.317646

KEYWORDS: Waveguides, Sensors, Thin films, Refractive index, Interferometry, Molecules, Chemical detection, Biological and chemical sensing, Channel waveguides, Transducers

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Proceedings Article | 6 July 1998 Paper

Electron-radiation-sensitive hybrid sol-gel materials for electron-beam lithography and diffractive optics

Juha Rantala, R. Scott Penner, Seppo Honkanen, Nina Nordman, Olli Nordman, Jouko Vaehaekangas, Mahmoud Fallahi, Nasser Peyghambarian

Proceedings Volume 3469, (1998) https://doi.org/10.1117/12.312923

KEYWORDS: Sol-gels, Waveguides, Glasses, Electron beams, Chemical elements, Fiber Bragg gratings, Lithography, Etching, Fabrication, Optical components

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Proceedings Article | 15 May 1998 Paper

New optical detection techniques for chemical sensors

Sergio Mendes, Seppo Honkanen, Mahmoud Fallahi, Nasser Peyghambarian

Proceedings Volume 3270, (1998) https://doi.org/10.1117/12.308385

KEYWORDS: Waveguides, Chemical fiber sensors, Sensors, Semiconductor lasers, Interferometry, Spectroscopy, Glasses, Thin films, Chemical analysis, Absorbance

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Proceedings Article | 17 April 1998 Paper

Semiconducting conjugated polymers: light amplification and lasing

Alex Schuelzgen, Christine Spiegelberg, Michael Morrell, Sergio Mendes, Pierre-Marc Allemand, Yutaka Kawabe, Makoto Kuwata-Gonokami, Seppo Honkanen, Mahmoud Fallahi, Bernard Kippelen, Nasser Peyghambarian

Proceedings Volume 3281, (1998) https://doi.org/10.1117/12.305421

KEYWORDS: Polymers, Absorption, Resonators, Semiconductors, Waveguides, Excitons, Laser resonators, Active optics, Laser applications, Optical microcavities

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Proceedings Article | 15 April 1998 Paper

Development and characterization of a new Er3+-doped phosphate glass for planar waveguide lasers and amplifiers

Shibin Jiang, Seppo Honkanen, Tao Luo, Bor-Chyuan Hwang, Gualtiero Nunzi Conti, Michael Myers, Daniel Rhonehouse, Nasser Peyghambarian

Proceedings Volume 3280, (1998) https://doi.org/10.1117/12.305405

KEYWORDS: Glasses, Planar waveguides, Optical amplifiers, Absorption, Erbium, Fiber amplifiers, Luminescence, Laser glasses, Ions, Baryon acoustic oscillations

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SPIE Journal Paper | 1 April 1998

Light amplification and laser emission in conjugated polymers

OE, Vol. 37, Issue 04, (April 1998) https://doi.org/10.1117/12.10.1117/1.601949

KEYWORDS: Polymers, Absorption, Excitons, Resonators, Waveguides, Semiconductors, Mirrors, Laser applications, Silicon, Femtosecond phenomena

SPIE Journal Paper | 1 April 1998

Modeling of planar ion-exchanged Er3+-doped glass waveguide amplifiers

Juha-Pekka Laine, Seppo Honkanen, Ari Tervonen, Nasser Peyghambarian

OE, Vol. 37, Issue 04, (April 1998) https://doi.org/10.1117/12.10.1117/1.601952

KEYWORDS: Waveguides, Glasses, Erbium, Signal processing, Optical amplifiers, Ion exchange, Signal attenuation, Ions, Diffusion, Waveguide modes

Proceedings Article | 2 October 1997 Paper

Optical waveguide based on CdS quantum-dot-doped sodium borosilicate glass fabricated by the sol-gel technique

Yuhuan Xu, Yu-Hua Kao, Connie Chia, John Mackenzie, Seppo Honkanen, Nasser Peyghambarian

Proceedings Volume 3136, (1997) https://doi.org/10.1117/12.284129

KEYWORDS: Glasses, Cadmium sulfide, Sodium, Sol-gels, Waveguides, Borosilicate glass, Semiconductors, Channel waveguides, Absorption, Ion exchange

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Proceedings Article | 23 July 1997 Paper

In-situ chemical detection based on photonic devices

Yuri Beregovski, Sergey Ten, Sergio Mendes, Seppo Honkanen, Mahmoud Fallahi, Nasser Peyghambarian, Karen Grace, Basil Swanson

Proceedings Volume 3082, (1997) https://doi.org/10.1117/12.280937

KEYWORDS: Sensors, Waveguides, Refractive index, Spectrometers, Interferometry, Chemical detection, Fiber optics sensors, Molecules, Glasses, Fiber lasers

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Proceedings Article | 2 May 1997 Paper

Er-doped fluoride glass films by MOCVD for waveguide devices

Chia-Yen Li, Vladimir Fuflyigin, Jing Zhao, Xuesheng Chen, Seppo Honkanen, Nasser Peyghambarian

Proceedings Volume 2996, (1997) https://doi.org/10.1117/12.271145

KEYWORDS: Glasses, Metalorganic chemical vapor deposition, Luminescence, Magnesium fluoride, Erbium, Chemical vapor deposition, Oxygen, Integrated optics, Silica, Ions

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Proceedings Article | 2 May 1997 Paper

High Er concentration phosphate glasses for planar waveguide amplifiers

Seppo Honkanen, Tomoko Ohtsuki, Shibin Jiang, S. Iraj Najafi, Nasser Peyghambarian

Proceedings Volume 2996, (1997) https://doi.org/10.1117/12.271162

KEYWORDS: Erbium, Glasses, Upconversion, Energy transfer, Ytterbium, Waveguides, Ions, Absorption, Luminescence, Energy efficiency

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Proceedings Article | 2 May 1997 Paper

Modeling of Er-doped ion-exchanged glass waveguide amplifiers

Seppo Honkanen, Juha-Pekka Laine, Tomoko Ohtsuki, Ari Tervonen, Nasser Peyghambarian

Proceedings Volume 2996, (1997) https://doi.org/10.1117/12.271149

KEYWORDS: Waveguides, Glasses, Amplifiers, Erbium, Waveguide modes, Ions, Silver, Single mode fibers, Signal processing, Wave propagation

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Proceedings Article | 23 January 1997 Paper

Integrated optics for instrumentation applications

Pentti Karioja, Jouko Lammasniemi, Ari Tervonen, Seppo Honkanen

Proceedings Volume 2997, (1997) https://doi.org/10.1117/12.264165

KEYWORDS: Integrated optics, Fiber optics, Waveguides, Solar cells, Sensors, Photovoltaics, Actuators, Light emitting diodes, Semiconductor lasers, Data transmission

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SPIE Journal Paper | 1 September 1995 Open Access

Guest Editorial: Optical Science and Engineering in Finland

Seppo Honkanen

OE, Vol. 34, Issue 09, (September 1995) https://doi.org/10.1117/12.10.1117/12.217104

KEYWORDS: Optics, Optical engineering

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SPIE Journal Paper | 1 September 1995

Passive fiber optic bus using bidirectional integrated optic bus access couplers

Pentti Karioja, Simo Tammela, Ari Tervonen, Seppo Honkanen

OE, Vol. 34, Issue 09, (September 1995) https://doi.org/10.1117/12.10.1117/12.208109

KEYWORDS: Integrated optics, Fiber optics, Ion exchange, Optics manufacturing, Waveguides, Process modeling

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Proceedings Article | 17 March 1995 Paper

Gain characteristics of a high-concentration Er3+ doped phosphate glass waveguide

Tomoko Ohtsuki, Seppo Honkanen, C.-Y. Li, S. Iraj Najafi, Richard Powell, Nasser Peyghambarian

Proceedings Volume 2401, (1995) https://doi.org/10.1117/12.205025

KEYWORDS: Waveguides, Erbium, Glasses, Wave propagation, Signal attenuation, Ion exchange, Absorption, Channel waveguides, Solids, Molybdenum

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Proceedings Article | 21 October 1994 Paper

Recent progress in glass integrated optical circuits

S. Iraj Najafi, Seppo Honkanen, Ari Tervonen

Proceedings Volume 2291, (1994) https://doi.org/10.1117/12.190896

KEYWORDS: Glasses, Waveguides, Integrated optics, Silica, Silicon, Ion exchange, Sensors, Photonic integrated circuits, Refractive index, Packaging

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Proceedings Article | 28 July 1994 Paper

Glass integrated optics circuit for 1.3/1.55 micrometer optical communication system

Guang-Wen Zhang, Seppo Honkanen, S. Iraj Najafi, Ari Tervonen

Proceedings Volume 2213, (1994) https://doi.org/10.1117/12.180967

KEYWORDS: Multiplexers, Waveguides, Glasses, Integrated optics, Photonic integrated circuits, Silver, Wavelength division multiplexing, Networks, Fiber amplifiers, Integrated circuit design

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Proceedings Article | 28 July 1994 Paper

Modified double ion-exchange method for the fabrication of phase gratings in glass waveguides

Jyrki Saarinen, Seppo Honkanen, Guang-Wen Zhang, S. Iraj Najafi

Proceedings Volume 2213, (1994) https://doi.org/10.1117/12.180952

KEYWORDS: Waveguides, Potassium, Glasses, Silver, Ions, Diffraction, Ion exchange, Diffraction gratings, Aluminum, Optical design

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Proceedings Article | 28 July 1994 Paper

Progress toward realization of rare-earth-doped glass integrated-optics lasers

Veronique Francois, S. Iraj Najafi, Tomoko Ohtsuki, Nasser Peyghambarian, Seppo Honkanen, Sylvain Lafreniere, Mark Andrews

Proceedings Volume 2213, (1994) https://doi.org/10.1117/12.180964

KEYWORDS: Waveguides, Glasses, Sol-gels, Refractive index, Ion exchange, Silver, Channel waveguides, Integrated optics, Upconversion, Rare earth doped glasses

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Proceedings Article | 28 July 1994 Paper

Effect of thermal post-annealing on spectral transmission of 0.807/1.3 um, 1.48/1.55 um, and 1.3/1.55 um ion-exchanged Mach-Zehnder interferometer wavelength demultiplexers/multiplexers

Guang-Wen Zhang, Seppo Honkanen, S. Iraj Najafi, Ari Tervonen, Pekka Katila

Proceedings Volume 2213, (1994) https://doi.org/10.1117/12.180966

KEYWORDS: Waveguides, Wavelength division multiplexing, Thermal effects, Silver, Ion exchange, Mach-Zehnder interferometers, Demultiplexers, Interferometers, Potassium, Aluminum

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Proceedings Article | 25 July 1994 Paper

Ion-exchanged glass waveguide devices for optical communications

Seppo Honkanen

Proceedings Volume 10275, 102750A (1994) https://doi.org/10.1117/12.179768

KEYWORDS: Glasses, Waveguides, Optical communications, Integrated optics, Ions, Silver, Ion exchange, Directional couplers, Potassium, Mach-Zehnder interferometers

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SPIE Journal Paper | 1 September 1993

Analysis of symmetric directional couplers and asymmetric Mach-Zehnder interferometers as 1.30- and 1.55-μm dual-wavelength demultiplexers/multiplexers

Ari Tervonen, Seppo Honkanen, S. Iraj Najafi

OE, Vol. 32, Issue 09, (September 1993) https://doi.org/10.1117/12.10.1117/12.145072

KEYWORDS: Waveguides, Directional couplers, Wavelength division multiplexing, Glasses, Beam propagation method, Mach-Zehnder interferometers, Ions, Interferometers, Silver, Refractive index

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